Per-Node Liquid Cooling Valves for Adaptive Flow and Leak Isolation
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Solution Overview
Problem
Existing liquid cooling systems for computing devices are inefficient in energy usage and waste energy by maintaining high flow rates across all components, even when not needed, and lack effective leak isolation mechanisms.
Innovation Solution
Implementing individually controllable valves per computing node to adjust coolant flow rates based on node-specific conditions, coupled with pump speed control to match flow demands, and incorporating leak detection and isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If high flow rates are maintained across all components, then cooling effectiveness is improved, but energy consumption increases
Solution Approach 1:
The system segments the cooling flow control into individual node-level decisions through electronically controllable valves at each computing node. Each valve independently regulates coolant flow to its respective node based on local thermal conditions, replacing the previous uniform high-flow-rate approach across all nodes. This segmentation enables the system to maintain adequate cooling effectiveness while reducing overall energy consumption by matching flow rates to actual cooling needs at each node.
Solution Approach 2:
The system implements dynamic flow rate adjustment at each computing node through electronically controllable valves that respond to real-time thermal conditions. Instead of maintaining static high flow rates, the valves dynamically modulate coolant flow based on detected temperature conditions, allowing the system to adapt cooling intensity to actual thermal demands and thereby reduce energy consumption while maintaining cooling effectiveness.
2Device complexity
If uniform flow rates are provided to all nodes, then system simplicity is maintained, but cooling efficiency decreases
Solution Approach 1:
The system segments flow control into node-specific independent channels with individually controllable valves. This segmentation enables each node to receive customized flow rates matched to its thermal characteristics and workload, significantly improving cooling efficiency compared to uniform flow distribution, while the modular valve architecture keeps the added complexity manageable.
Solution Approach 2:
The system applies local quality by allowing each computing node to have its own flow rate characteristics tailored to its specific thermal conditions and cooling requirements. Instead of enforcing uniform flow rates across all nodes, each node receives locally optimized coolant flow, improving overall cooling efficiency while maintaining reasonable system complexity through standardized valve components.
3Reliability
If leak detection and isolation mechanisms are added, then system reliability improves, but device complexity increases
Solution Approach 1:
The system uses the segmented node-level valve architecture to implement leak isolation. When a leak is detected at a specific computing node, only the valve at that node is closed to isolate the leak, while other nodes continue operating normally. This segmentation approach provides effective leak isolation capability without requiring system-wide shutdown or complex centralized isolation mechanisms, thereby limiting the increase in overall system complexity.
Solution Approach 2:
The system implements self-service leak isolation where each computing node has its own controllable valve that can be independently closed in response to local leak conditions. The decentralized control architecture allows nodes to autonomously isolate themselves from the cooling loop when leaks are detected, improving system reliability without requiring complex centralized monitoring and control systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances energy efficiency by optimizing coolant flow, reduces waste, and provides rapid leak isolation without affecting other components.
Implementation Method 1
cold coolant flows from the heat exchanger through the loop into the computing devices, the coolant absorbs heat from the devices
Implementation Method 2
the now-warmed coolant exits the devices and flows back to the heat exchanger, the heat exchanger removes heat from the coolant by exchanging heat with another cooling medium
Data Source
AI summary
A system, a method and device. The system comprising trays each comprising processors, a liquid cooling loop configured to supply liquid coolant to the trays, individually electronically controllable valves disposed in the liquid cooling loop, wherein each valve of comprises a movable element which is movable in response to an electronic signal to control the flow of the liquid coolant to a corresponding tray of the plurality of trays, pumps configured to cause the liquid coolant to flow through the liquid cooling loop, a control system comprising one or more controllers, wherein the controllers are configured to: individually control each valve of the plurality of individually electronically controllable valves as a function of a state of the corresponding tray, and control the pumping speed of the one or more pumps as a function of the states of the movable elements of the individually electronically controllable valves.